So this article might be from mid-2006, but whatevs it’s interesting as heck. UK based Compound Security has developed a high pitched noise that is meant to deter teenagers from loitering around your convenience store. The principle behind this technology is that old people all go deaf to some degree or another and overtime this loss of hearing reduces our ability to pick up certain sounds – especially high pitched sounds.
So sounds like a great idea, but those industrious teenagers have co-opted the technology and are using the sound as a ring tone. Now students don’t have to miss out on the hottest gossip while sitting in class or at the dinner table. You can read the whole article at The New York Times.
UPDATE: You can here the ring tone here